Laren



Rf L. MG'LAREN.

(No Model.)

GAR AXLE,

1Io.483,470.V Patented Sept. Z7, 1892.

Tina co., Pummrmu.. wAsHmaTon, u. c

UNrrnD STATESN PATENT OFFICE RAYNES L. MCLAREN, OF BLACKI-IEATI-I, ENGLANDf CAR-AXLE.

SPECIFICATION forming part of Letters Patent No. 483,470, dated September 2'?, 1892. Application tiled April 9, 1892. Serial No.4281502. (No model.) Patented in England July 9, 1891, No. 11,696.

To all whom t may concern:

Be it known that I, RAYNEs LAUDER Mo- LAREN, a citizen of England, residing at 32 Wemyss Road, Blackheath, in the county of Kent, England, have invented certain new and useful Improvements in Divided Axles for Railway and Tramway Wheels, (for which I have obtained Letters Patent in Great Britain, dated July 9, 1891, No. Il,696,) of which the following is a specification.

My invention relates to divided axles for railway or `tramway wheels of the kind wherein the one part of the axle carrying the one wheel is made tubular and has the other part carrying 'the other wheel fitted into it in such manner that while the two parts are held together each part can revolve independently of the other. According to my invention I construct such axles as I will describe with reference to the accompanying drawings, in Which- Figure l shows a divided axle and pair of wheels, partly in elevation and partly in section; and Figs. 2 and 3 show, respectively, cross-sections on line A B and C D, Fig. l.

The axle is composed of the tubular part a, having the wheel b fixed thereon, and the part o, iitting into the part a and having the wheel d fixed thereon. The tubular part ct is accurately bored out to near the end of its larger bore, and the part c is turned so as to fit accurately into such bored part, leaving a chamber e at the end of the latter, which forms a reservoir for lubricant, it being made to communicate for this purpose with a central passage f in the part c, as hereinafter described. This passage is closed at the outer end by any suitable known construction of lubricator for the supply of lubricant to the said passage. By the above-described construction it will be seen that any transverse strains to which the divided axle is subjected are distributed along the whole length of the bearing-surfaces of the two parts, thus greatly reducing any wear thereof. On the cylindrical surface of the inner part of c is formed ahelical channel g, and the central passage f communicates at various points with such channel by means of radial channels h, so that the lubricant is by this means eectually supplied from passage fto the entire bearing-surfaces of a and c.

is fitted a metal packing-ring m.

The endof the channel g communicates with the space e, so that the lubricant also nds its way into this space, and is supplied thence to a central boring c', formed through the outer part of ct. Into the end of the part cis secured a rod j, that passes through such boring, and has locked nuts 7c screwed onto its projecting end, with a washer inside and with a split pin outside these nuts, if necessary, so that by this means the part o. and c are held securely together, while they are free to rotate independently of each other. The rod is prevented from becoming unscrewed from the part c by drilling longitudinal holes through the threads and driving in pins, as shown at Z, Fig. 2. The rod j might of course be formed in one with the part c; but it will be obvious that this would be a more expensive arrangement. The open end of the tubular part of a is formed with an enlargement a, against which iits the shoulder of the part c and which has a circular groove, into which This is pressed outward by springs n, so as to bear with its outer face against the inner turned face of the boss d of the wheel d, fixed on c. By this means any access of grit to the joint between the part a and c is prevented. Should in course of time any slight looseness through wear occur between the shoulder of the part c of the axle and the end face of the part a, the two parts can be tightened up by means of the screw-nuts k, there being sufficient room left for such adjustment at the inner end of the bore of a. After such tightening up the hole for the split pin can be enlarged and a larger split pin be inserted, and should the shoulder of the part c, against which the end of a bears, become worn considcrably it can be turned down, a ring be shrunk on in front of it, and this be then turned up to the original dimensions.

Having thus described the nature of my invention andthe best means I know for carrying the same into practical effect,I claiml. In a divided axle, the combination of a tubular part a, a part c, fitting into the part a with turned cylindrical bearing-surfaces of the same diameter throughout and extending through the greater part of said part a, and a rodj, passing freely through a central bor- IOO ing of the outer end of part a', such rod be- I yond the same by a screw-nut, substantially ing screwed into the part c and secured at the outer end of part a by a screw-nut lo, so as to secure the parts a and c together, substantially as described.

2. In a divided aXle, the combination of a tubular part d, a part c, fitting into a with turned cylindrical surfaces, a rodj, xed to part c and passing through a central boring of a, and secured externally bya screw-nut lo, and a packing-ring lm, fitting a circular groove in the end face of the part a and pressed by springs against the inner face of the Wheel iixed on the part c, subst-an tially as described.

3. In a divided axle, the combination of a tubular part a, a part c, fitting into ct With turned cylindrical surfaces, a central longitudinal passage f, formed in the part c for the reception of lubricant and communicating at the inner end with a chamber e in the parta, a helical channel g on the part c, radial channels h, connecting the passage f With the passage g and with a chamber e, and a rodj, eX-

, tending from the part c and passing through a central bore in the part cl and secured beas described.

4C. In a divided axle, the combination of a tubular part a, a part @fitting With a turned cylindrical surface the bored hollowof the part a, means for securing the parts ol and c together so that they can revolve independently of each other, but cannot separate, and a packing-ring iitting a circular groove in the enlarged end of the tubular part a and pressed by springs against the turned inner face of the boss of the wheel fixed on thepart c, substantially as described.

'In testimony'Whereof'I have signed my naine to `this specification, in the-presence of two subscribing Witnesses, this 28th day of March, A. D. 1892.

RAYNES L. IMOLAREN.

Witnesses:

CHAs. D. ABEL, 2S Southampton Buildings, London, YW C.

JNO. P. M; MILIARD,

. Clerk lo`MeSsrs. Abelct Immy, Consulting Engineers and Patent Agents, 28S0ulhctmpton Bm'lcllngs',London, W. O'. 

